Copper-back-reflector gas-heater.



P. M. BRADLEY. COPPER BACK REFLECTOR GAS HEATER.

APPLICATION FILED APR.4, 1912.

1,051,071. Patented Jan.21,1913.

wi tmeooeo COLUMBIA PLANOGRAPH 60.. WASHINGTON, D. C.

FORTE M. BRADLEY, OF LITTLE ROCK, ARKANSAS.

COPPER-BACK-REFLECTOR GAS-HEATER.

Specification of Letters Patent.

Patented J an. 21,1913.

Application filed April 4, 1912. Serial No. 688,443.

To all whom it may concern Be it known that I, PORTE M. BRADLEY, acitizen of the United States, residing at Little Rock, in the county ofPulaski and State of Arkansas, have invented certain new and usefulImprovements in Copper- Back-Iteflector Gas-Heaters; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will. enable others skilled in the art to which itappertains to make and use the same.

This invent-ion relates to heaters, and it relates more particularly togas heaters of the box pattern, or open front pattern.

An object of the invention is to provide a gas heater of thisconstruction provided with one or more deflector plates, whereby theheat from the burning gas is distributed within the heater, so that thegreatest radiating efficiency is obtained therefrom.

Another object is to provide flanged side linings for supporting theusual corrugated bottom, while serving the additional purpose ofprotecting the box or casing.

A still further object is to dispose the corrugated bottom and upperdeflector plate in cooperative relation for protecting the rear part ofthe casing, against the action of the flame.

A still further object. of the invention is to dispose the gas burnernear the open front and in such relation thereto that the flametherefrom will receive a draft both above and below the same.

Other objects and advantages may be recited hereinafter and in theclaim.

In the accompanying drawings which form a part of this application,Figure 1 is a vertical side sectional view through the front and back ofa stove embodying my invention, and, Fig. 2 is a perspective view of thesame.

Referring to the drawings in which similar reference charactersdesignate corresponding parts throughout the several views, the box orcasing is designated 5, being open in front between the points 6 and 7,and being provided with a top 8, which may be of any properconstruction. A flue outlet 9 is provided in the upper portion of theback of the box, and said box is provided. with the usual corrugatedbottom 10, the lateral edges of which are supported by flanges 11, oneof which appears in Fig. 1, said flanges being formed on the bottomedges of side linings 12 which extend above the burner 13, therebyprotecting the side walls of the box from the zone of greatest heat, sothat the polish and enamel thereof will not be detrimentally affected,the top edge of said side linings being designated 12 The corrugatedbottom 10 may also extend on a plane above the burner, being secured tothe back of the box at its top edge, by means of bolts 14.

The burner 13 is preferably provided with lava gas jets or tips 15, ofsuch construction, and in such relation to the box, as to throw a jet ofgas, in a horizontal direction, from the front portion approximately tothe rear portion of the box. hen these gas ets are lighted, aconsiderable degree of heat therefrom is imparted to the back part ofthe stove, so that it becomes necessary to protect the said back part ofthe stove against the detrimental influence of the heat. I thereforeprovide an upper deflector plate 16, secured to the back at 17 andhaving its lower edge fitted against the corrugated bottom 10. Thedeflector plate 16 extends upwardly and forwardly from its fastening 17,and coacts with a lower deflector plate 18, for causing the flame andheated air therefrom, to pass alternately upwardly and laterally in anS-shaped course.

Stoves of this character are usually formed in such manner that productsof combustion may escape through or around the top thereof, and this issometimes objectionable; and in such instances it is desirable that allof the products of combustion escape through the flue opening. In orderto prevent the escape of the products of combustion at the top of thestove, I provide the flue opening considerably below said top, and whileI extend the deflector plate 16 forwardly, for the purpose of preventingdischarge of the products of combustion before the heat has beenradiated therefrom, I provide a flue opening on a plane below the topedge of the deflector plate 16, so that the products of combustion aredrawn downward from the top, so that there will be no escape of thecombustion gases at the top of the stove.

The deflector plate 18 is preferably secured to the front wall 19 of thebox by means of a bolt 20, in the manner shown, and has a flange 21,which is secured to the side wall 22 by means of a bolt 23. The

lower deflector plate 18 extends rearward in a slightly inclined orsubstantially horizontal direction, having its rear edge portion curvedslightly upward.

It will be seen that an air passage 24 is provided between the burner 18and the deflector plate 18, thereby protecting the deflector plate fromthe zone of greatest heat, and cooperating with the opening below theburner 13, for surrounding the blaze 25 with cool air, which absorbsheat from the flame and distributes it, at a reduced temperature, to theback, sides, upper front and top of the stove, as it passes, in thedirection of the arrows between the deflector plates, between the upperdeflector plate and the top of the stove, and out through the opening 9.The lengths of the respective arrows, somewhat graphically illustratethe diminution of temperature as the heat becomes absorbed and radiatedby the several elements of the stove. It is well known that the heatedair which passes out through the opening 9 ascends to the ceiling of theroom which is being heated, and the desired heating efficiency is notobtained, where the heat is thus allowed to ascend. It is thereforedesirable to so distribute the heat within the stove, that it passes outthrough the surface thereof, by radiation, rather than in the form of aheated air current.

From the foregoing, it will be seen that I have provided a stove of thischaracter having maximum radiating efficiency, and at the same time Ihave provided elements for effectually protecting the stove againstdetrimental overheating of certain parts, said elements being so relatedwit-h each other and with the body or box of the stove, as to properlyperform the protecting, distributing and radiating functions.

I do not limit my invention to the exact details of construction,combination and arrangement of parts, as described and illustrated inthe foregoing, but my invention may only be limited by a reasonableinterpretation of the following claim.

IVhat I claim is:

In a gas stove, a box having a back and sides and an open front, ahorizontal burner located near the open front below the top of theopening and adapted to. direct a flame rearwardly, a deflector platejoined onto the front above the opening thereof and extending rearwardlyand upwardly, the relation of the open front and the burner being suchas to provide an air passage between the burner and the deflector platefor the purpose of preventing contact of the flame with the deflectorplate, a bottom member secured to the front below the opening andextending rearwardly and upwardly and being joined onto the backsubstantially on the horizontal plane of the burner, a deflector platesecured onto the back and abutting upon the bottom member and extendingupwardly and forwardly therefrom in such relation to the first saiddeflector plate as to provide an air passage therebetween, the forwardlyextending deflect-or plate having its upper edge in such relation to thestove top as to form an air passage between said top and forwardlyextending deflector plate, said back having a flue opening therethroughon a plane below the top edge of the forwardly extending deflectorplate, so that the heated air and products of combustion after passingthrough thefirst said air passage must pass rearward and downward beforeescaping through the outlet opening so as to prevent the escape of saidproducts of combustion at the top of the stove.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

PORTE M. BRADLEY.

Witnesses J. M. BROWN, 0. M. ENGLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

